Bump itext7 from 9.4.0 to 9.5.0#53
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--- updated-dependencies: - dependency-name: itext7 dependency-version: 9.5.0 dependency-type: direct:production update-type: version-update:semver-minor - dependency-name: itext7 dependency-version: 9.5.0 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>
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Updated itext7 from 9.4.0 to 9.5.0.
Release notes
Sourced from itext7's releases.
9.5.0
In this first iText Core release of 2026 we’re focusing on upcoming additions to the PDF specification; specifically adding support for Brotli-compressed PDF streams, and post-quantum-safe algorithms for digital signing.
The validation of PAdES signature profiles has been improved to detect Document Security Store changes between revisions.
In addition, there are various improvements and fixes across the core modules. See below for more details.
Support for Brotli Compressed PDF Streams
The Flate/Deflate compression method was first introduced in version 1.2 of the PDF specification back in 1996. Based on zlib, it has served well though is rather long in the tooth these days. With that in mind, the PDF Association plans to add support for the modern Brotli compression standard to the PDF specification in the near future. As befits our position in the industry, we're introducing Brotli support to iText now rather than later.
In this release we’ve added proof‑of‑concept support for reading and writing PDFs that use Brotli compression, including a new filter handler and corresponding high‑level API hooks.
For now at least, you should consider this feature experimental, since current support for Brotli-compressed PDFs in other software is scarce. Even after it becomes part of the official specification it will take some time for the majority of PDF viewers and browsers to support such documents. As always with new standards and technology, however, it's important for iText along with other major PDF vendors to adopt and popularize them as soon as possible.
For those brave souls who wish to proceed, the new brotli-compressor module is only available from our artifactory, for now. See the README for more details on its usage and configuration.
Post-Quantum-Safe Digital Signature Algorithm Support
Once again, this is one for the future; albeit a rather more uncertain one. Quantum computers are beginning to step outside of the purely theoretical world, and with them comes the dangers of Q-Day. That is, the day when a quantum computer could conceivably instantly render existing means of encryption obsolete.
Fortunately, some extremely clever boffins have been aware of the dangers for some time, and a variety of encryption algorithms has been developed to counter quantum-based attacks. Thanks to the venerable Bouncy Castle cryptographic modules used by iText, we have implemented POC support for the Post-Quantum algorithms supported by Bouncy Castle.
Again, official support in the PDF specification will be coming soon and so it's time for us to implement support in iText. However, it should be noted that these are not yet supported in FIPS mode, as the official PQC-safe algorithms for FIPS are still to be defined. Once PQC-safe FIPS mode is possible, you can be sure iText will be at the forefront of PDF implementations.
PAdES Signature Profiles
We've made further headway into making digital signatures easier with preset PAdES signature profiles. The PAdES profile validation is improved and can detect when the Document Security Store (DSS) changes between revisions. It will emit a TimestampsAfterDSSEvent when appropriate, improving timestamp validation accuracy.
Also in this release you'll find new samples for the Ukraine and Moldova trusted lists which are available from the European Commission's eIDAS Dashboard site.
Pull Requests
For this release we want to thank dajoropo for their contribution to improve error handling when an attempt to create a PDF from a TIFF image fails. Now, iText Core will include the original exception to assist in diagnosing why the error occurred.
Bug Fixes and Miscellaneous
We have introduced a common, cross‑platform JSON AST and converters to serialize/deserialize between Java/C# objects and a unified JSON representation, improving maintainability and GraalVM/AOT support.
Support for East Asian (Japanese) line‑breaking rules in the layout module was added to avoid orphan punctuation at the beginning of lines, improving typography for Japanese text.
We also investigated and resolved an issue with form filling and flattening introduced after version 9.0.0, after a customer reported a regression in performance.
A bug in calculating the maximum number of XRef elements was fixed, avoiding potential overflow issues in large documents.
We fixed an issue preventing OCG layers from being added, modified, or removed in append mode was fixed, including when no prior OCG layers existed.
We also fixed the handling of unencrypted metadata in encrypted documents by aligning decryption logic with encryption dictionary flags (AES‑256 vs AES‑GCM behavior), and clarified how metadata is treated on creation.
A bug when validating a PDF signature was resolved, where iText did not use OCSP/CRL responses that were added to the document’s DSS in a non-timestamped revision.
... (truncated)
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